Fix thinko in new match_join_clauses_to_index() logic. We don't need to constrain the other side of an indexable join clause to not be below an outer join; an example here is
SELECT FROM t1 LEFT JOIN t2 ON t1.a = t2.b LEFT JOIN t3 ON t2.c = t3.d; We can consider an inner indexscan on t3.d using c = d as indexqual, even though t2.c is potentially nulled by a previous outer join. The comparable logic in orindxpath.c has always worked that way, but I was being overly cautious here. Branch ------ master Details ------- http://git.postgresql.org/pg/commitdiff/0140a11b9ba5b22e1e4807e178bca770d46c3e28 Modified Files -------------- src/backend/optimizer/path/indxpath.c | 8 ++++---- 1 files changed, 4 insertions(+), 4 deletions(-) -- Sent via pgsql-committers mailing list ([email protected]) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-committers
